Bio-based mesoporous sponges of chitosan conjugated with amino acid-diketopiperazine through oil-in-water emulsions

Bio-based mesoporous sponges of chitosan conjugated with amino acid-diketopiperazine through oil-in-water emulsions
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水包油乳液与氨基酸二酮哌嗪缀合的壳聚糖生物基介孔海绵

DOI:
10.1007/s10965-017-1372-7
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发表时间:
2017
影响因子:
2.8
通讯作者:
Tatsuo Kaneko
Tatsuo Kaneko
中科院分区:
化学3区
文献类型:
--
作者:
Kenji Takada;Hongrong Yin;Tomoaki Matsui;Tatsuo Kaneko

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以3-苄基-2,5-二酮哌嗪-6-乙酸(DKP)为原料,经1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐和N-羟基丁二酰亚胺活化,合成了全生物基壳聚糖衍生物。通过红外光谱和核磁共振氢谱证实了生物共轭壳聚糖的结构和定量修饰。以不同比例的水和苯溶液呈现所得产物的水包油(o/w)乳液。将得到的o/w乳液继续冷冻干燥以制备介孔海绵,这取决于水和苯的比例。这些两亲性通过壳聚糖中DKP侧基的性质观察到。通过改变溶剂配比,可将海绵的孔径控制在0.1 ~ 0.3 μm之间。
Fully bio-based chitosan derivative was synthesized using 3-benzyl-2,5-diketopiperazine-6-acetic acid (DKP) activated by 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride andN-hydroxysuccinimide. From IR and1H NMR spectra, the structure of the bioconjugated chitosan and the quantitative modification were confirmed. Oil-in-water (o/w) emulsion of the obtained product was presented with the various ratios of water and benzene solution. Continuously the obtained o/w emulsions were freeze-dried to produce the mesoporous sponge, depended on the ratio of the water and benzene. These amphiphilic properties were observed by the property of the pendant DKP moieties in chitosan. The pore size in the sponges was controlled in a range from 0.1 to 0.3 μm by changing the solvent ratios.
DOI: 10.3762/bjoc.10.159
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